.prog-system-container-pad {
  width: 100%;
  height: 650px;
  background: url(../../images/prog_system_bg.png) no-repeat;
  background-size: cover;
  background-position: center;
  .prog-system {
    width: 1000px;
    height: 100%;
    margin: 0 auto;
    ul {
      &::after {
        content: '';
        display: block;
        clear: both;
      }
      padding-top: 60px;
      box-sizing: border-box;
      li {
        width: 460px;
        height: 198px;
        float: left;
        margin: 0 20px 20px 20px;
      }
      .icon1 {
        background: url(../../images/system_1.png) no-repeat;
        background-size: contain;
      }
      .icon2 {
        background: url(../../images/system_2.png) no-repeat;
        background-size: contain;
      }
      .icon3 {
        background: url(../../images/system_3.png) no-repeat;
        background-size: contain;
      }
      .icon4 {
        background: url(../../images/system_4.png) no-repeat;
        background-size: contain;
      }
    }
  }
}
